I liked the X-Wing restoration video in the OP.
Not to derail the thread, but does anyone have any suggestions for videos similar in style to those in the OP but are about building and painting Gundam model mobile suits instead? I'd probably watch so many well done videos of someone making really good models of those, especially if they were just like the quality and style of those videos.
I'll probably go down a rabbit hole of looking for stuff like this now because yeah, cool vids.
Unfortunately I don't know anyone who does Gundam models, but the absolute best channel to see painting and sculpting, and general customizing, is from Vince-Vell Customs. He does statue stuff that's mostly all superheros (repairs, custom unpainted works, kits, conversions from one character to another, personal commissions, official company pieces, etc). But every once in a while he'll redo a piece into an anime character and do a series about it. Recently he created a Jessie from Pokemon out of a Poison Ivy statue. I'm linking the seventh video of the series here, where he's at the final stage of painting. But the other videos in the series are about the drilling out of the original statue features, the sculpty he uses to build up her anime outfit from the shaved down statue, the metal rods he puts in her feet to stand her up and make sure she doesn't lean over time, and general statue building - if those topics might interest you. At the very least, the channel has a good mix of videos of him just reviewing works he did after the fact, showing off repairs he's done, showing the equipment he uses, and even recordings of live streams he's done where you can watch him work live and ask him basic painting questions if you want (he usually works on Sundays) =)
You could really get lost in what he does if you care at all about the character he's working on. And at the very least, if you wanna learn how to paint a Gundam model, this guy is gonna show you how to be the greatest custom painter in general =)